K4[Fe(CN)6] and benzenedial isomers: catechol, resorcinol and hydroquinone, were studied by voltoabsortometry, absorption spectroscopy versus potential sweep, to generate second order data sets. Linear sweep voltammetry was used for K4[Fe(CN)6] and differential pulse voltammetry for benzenediol isomers. Quantitative models were constructed using the PARAFAC algorithm in samples of tap water with the

The study of proton conductivity processes has received increasing attention in the past decades due to their potential applications in fields such as electrochemical devices and fuel cells. Despite the high number of composite membranes which have been described for this purpose, fundamental studies of the conduction phenomena in polymeric membranes are scarce. In this article, we study on the effect

Molybdenum disulfide (MoS2) is a promising anode material for sodium ion battery. Nevertheless, the semi-conductive feature and closely stacked nanostructure hinder its application. Moreover, the uncontrolled geometric structure and loose combination with high-conductive matrix lead to a limited Na+ diffusion path and easy-destroyed structure. Here, a strongly-combined MoS2/rGO nanosheet structure

The rational design of hybrid structures which consist of multiple components with distinctive characteristics is an effective strategy for developing materials when energy storage applications. In this paper, a novel hierarchical CoS2@Ni(OH)2 core-shell nanotube array covered carbon cloth is successfully designed and synthesized for use in supercapacitors (SCs). The CoS2 nanotube (NT) arrays are synthesized

The rapid development of supercapacitors has led to an increasing demand for the exploitation of stable and excellent electroactive electrode materials. Herein, a novel hybrid material of N, P co-doped hollow carbon microspheres (N/P-HCS) and ultrathin MnO2 nanosheets was facilely constructed for the electrode material of supercapacitors through a two-step synthetic strategy including the preparation

Flexible energy storage devices attracted extensive attention due to their application in personal wearable electronic products. However, the applications of flexible energy storage devices, especially supercapacitors are limited by low energy density, because anode materials with large capacitance are scarce for the devices based on aqueous electrolyte. Therefore, developing high-performance anode

Redox flow batteries (RFBs) are a promising technology for the storage of intermittent renewable energy. Graphite and carbon felts electrodes are commonly used in RFBs as they typically exhibit good conductivity, high liquid permeability, high surface area and are relatively inexpensive. The electrochemical performance of carbon felts is commonly tested by calculating the energy efficiency for charge-discharge

Transition metal sulfides have attracted much attention in recent years due to their high theoretical specific capacitance and conductivity. In this work, the two-layer heterogeneous metal sulfides (Zn-Co-S) were prepared successfully using the zinc-cobalt fund organic framework as a sacrificial template. The composite materials were characterized by a variety of means and its performance as electrode

Electrochemical phenomena were implemented to treatment of industrial wastewater containing high nitrogen concentrations. Organic nitrogen and ammonia, measured by Total Kjeldahl Nitrogen (TKN), raise concerns for most conventional wastewater treatment plants having limited capability of their removal. To avoid contamination of ecosystems with an excessive nitrogen discharge, environmental regulations

Design and fabrication of different metal oxide nanosphere with hierarchically porous structure is important for developing the performance of energy storage devices. In this present work, we have reported the fabrication of ZnO nanosphere decorated reduced graphene oxide (rGO) composite and its electrochemical performance for supercapacitive applications. The porous ZnO nanosphere embedded on rGO

We recently reported on the effect of dopant sizes on the performance of polythiophene (PT)-based solar cells wherein the PT film was polymerized with 3-{5-[N,N-bis(4-diphenylamino)phenyl]thieno[3,2-b]thiophen-2-yl}-2-cyano-acrylic acid (C207) pre-adsorbed onto the electrode. Herein we utilized n- and p-doped polythiophene (PT) films as part of the solid-state dye-sensitized solar cell (ssDSSCs) based

In a recent paper of Zhang et al. (2016) a variation of the Tikhonov regularization method for calculating the distribution of relaxation times (DRT) in relation to analysis of the electrochemical impedance spectroscopy data has been proposed. The novelty of the proposed method is that it is free from the regularization parameter, the adjusting of which usually causes the main issue when applying the

Friction stir processing (FSP) is applied in the treatment of low cost commercial purity Al (CP-Al) containing iron impurity element with the aim of optimizing the electrochemical properties and discharge performance of CP-Al as the anode of Al-air battery. FSP induced severe plastic deformation effects not only significantly refines CP-Al grains which have an average size of 3 μm but also leads to

Two swivel-cruciform D-A conjugated monomers (BTBBT and BTDQL) combining 5,5′-bibenzo[c] (Lv et al., 2017; Higginbotham et al., 2018; Dai et al., 2017) [1,2,5]thiadiazole (BBT) and 2,2′,3,3′-tetramethyl-6,6′-biquinoxaline (DQL) as the A units and 2,2′-bithiophene (BT) as the D unit are synthesized. The corresponding polymer films (pBTBBT and pBTDQL) are smoothly obtained on ITO-glass via electrochemical

Direct deposition of hierarchal and porous nanomaterials on the substrate has a considerable interest in the development of supercapacitor electrodes due to its simple and low-cost process, the porous surface area improves the charge storage capability and the hierarchical structure capable for more electrolyte infiltration with better ion diffusion. Herein, for the first time, we demonstrated the

The study of metallic multilayers (MM) has presented interesting highlights to understand electrocatalytic properties for organic molecules oxidation. This work reports the preparation and characterization of MM using rhodium or ruthenium as an intermediate layer, Ptpc/Rh/Pt and Ptpc/Ru/Pt, aiming to evaluate the electrocatalytic activity toward methanol and ethanol oxidation in acid medium. For methanol

Sustainable development goals reported in 2030 Agenda established the global challenges in different fields including agrifood, health, and climate change. Smart electrochemical eco-designed sensors can support the achievement of some goals thanks the capability to detect analyte on site using cost-effective instrumentation by unskilled personnel. Herein, we report the first office paper-based sensor

An innovative sandwich MIP-based electrochemical sensor was fabricated for the fast and selective detection of adenosine. The covalent-imprinted biomimetic recognition element relies on two overlapping polymeric films, an underlaying composite boronate‐affinity and poly(bithiophene)-structural layer and an overlaying poly(3-indolacetic acid) coating bearing carboxyl groups, intended to further shape

The interplay between residual strain and corrosive medium can accelerate the material failure either by stress corrosion cracking or corrosion fatigue. Thus, in this work, the effect of deformation history on the electrochemical behavior of Al-Mg (Al5083) alloy in a 0.6M NaCl solution was investigated. Initially, the Al5083 samples were deformed using forward Taylor anvil experiments and digital image

Rechargeable aluminum-ion batteries (AIBs), with high capacity, low cost and high security, are expected to be the next-generation energy storage devices. In this research, a sheet nanocomposite material MoSe2@C as positive electrode of AIBs is successfully synthesized by a simple hydrothermal method and following annealing treatment. In particular, the aluminum storage mechanism of MoSe2@C is studied

Anodic films were grown on Weathering Steel by potentiostatic polarization in slightly alkaline solution. The photoelectrochemical results reveal that they are n-type iron oxide with Eg = 2.0 eV. Rust layer grown by atmospheric corrosion are n-type semiconductors with a band gap higher than that estimated for the anodic film attributed to the formation of γ-lepidocrocite. The electrochemical impedance

The layer-wise deposition of the laser powder bed fusion (L-PBF) process offers a tailorable microstructure with anisotropic properties. This research aimed to investigate the contribution of crystallographic texture on the anisotropic electrochemical/corrosion behavior of an L-BPF processed commercially pure nickel (Ni) cube along surfaces oriented parallel and perpendicular to the building direction

Electroactive composite coating based on polyaniline and activated IR pyrolyzed polyacrylonitrile particles onto anodized graphite foil was developed for the first time. The roughened surface and presence of oxygen-containing groups on the foil surface provide good adhesion of the composite material. The study of coating properties by SEM and XPS techniques showed that the introduction of activated

Taking the advantage of the good matching of the valence and conduction bands of carbon nitride (g-C3N4) and copper oxide (CuO), we successfully fabricated a two-dimensional (2D) step-scheme heterojunction of g-C3N4/CuO via hydrothermal and pyrolysis techniques. The potential of applying this heterojunction in a high-performance electrochemical sensor for environmental hormone nonylphenol (NP) detection

The yolk-shell porous carbon spheres (YS-PCSs) with hierarchically nanoarchitecture were fabricated via a gradient sol-gel process combined with surfactant-directed co-assembly at different carbonized temperature of 600 ºC, 700 ºC, and 800 ºC. The samples were used as electrode materials in capacitive deionization (CDI) process to measure their desalination performances. The results demonstrated that